Lung cancer

Lung cancer

About Lung cancer

Lung cancer is a disease characterized by uncontrolled cell growth in tissues of the lung. If left untreated, this growth can spread beyond the lung in a process called metastasis into nearby tissue and, eventually, into other parts of the body. Most cancers that start in lung, known as primary lung cancers, are carcinomas that derive from epithelial cells. The main types of lung cancer are small cell lung carcinoma (SCLC), also called oat cell cancer, and non-small cell lung carcinoma (NSCLC). The most common cause of lung cancer is long-term exposure to tobacco smoke, which causes 80-90% of lung cancers. Nonsmokers account for 10-15% of lung cancer cases, and these cases are often attributed to a combination of genetic factors, radon gas, asbestos, and air pollution including secondhand smoke. The most common symptoms are coughing (including coughing up blood), weight loss and shortness of breath. Lung cancer may be seen on chest radiograph and computed tomography (CT scan).

Contributions by Jfdwolff, Andrew73, and Axl.

New Questions for Lung cancer

See All Questions